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Finding the Fourth Proportional to 665,065.80, 997,598.70 and 384,438.60

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Solution

The fourth proportional to 665,065.80, 997,598.70 and 384,438.60 is: 576,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,065.80 : 997,598.70 = 384,438.60 : x
  2. Step 2: Convert to fraction form
    665,065.80/997,598.70 = 384,438.60/x
  3. Step 3: Cross multiply
    665,065.80x = 997,598.70 × 384,438.60
  4. Step 4: Simplify right side
    665,065.80x = 383,515,447,589.82
  5. Step 5: Solve for x
    x = 383,515,447,589.82/665,065.80
  6. Step 6: Final answer
    x = 576,657.90

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.